Car-truck



(No Model.)

A. G. OEHRLE.

GARTRUOK..

No. 379,905. Patented Mar. 20, 1888.

UNITED STATES PATENT OFFICE.

ALBERT C. OEHRLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEAMERICAN PNEUMATIC RAILWAY COMPANY, OF TENNESSEE.

CAR-TRUCK.

SPECIFICATION formingpart of Letters Patent No. 379,905, dated March 20,1888.

(No model.)

To all whom it may concern:

Be it known that I, ALBERT O. OEHRLE, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in Oar-Trucks, whichimprovement is fully set forth in the following specification andaccompanying drawings.

My invention consists of a car-truck pro- Vided with means forpreventing the same from leaving the tracks, as will be hereinafterfully set forth.

Figure 1 represents an end View of a cartruck embodying my invention.Fig. 2 represents a side elevation thereof. Fig. 3 represents a sideelevation of a detached portion thereof, on an enlarged scale.

Sim lar letters of reference indicate correspond.ng parts in the severalfigures.

Referring to the drawings, A represents a car-truck, which, exceptingthe features of my invention applied thereto, is of usual construction.

B represents a hanger, which is freely connected with the floor or sillsof the truck, and depends from the center thereof, and has in its sidesthe recesses O, which extend obliquely or in diverging directions fromtop to bottom and receive the guiding and receiving wheels D D,whosejournals are mounted in boxes E, the latter being freely fitted inrecesses E in the lower ends of the sides of the hanger B, it beingnoticed that said wheels extend obliquely and are flanged on their innersides, the flanges F being in contact with the under sides of the headsof the tracks G on which the truck is run.

Springs H are interposed between the boxes E and the top walls of therecesses E, for forcing the wheels D against the track, and perrnittingsaid boxes to yield when the wheels are subjected to upward strain.

To the sides of the walls of the recesses G are secured brackets orbearings J, which are recessed to receive boxes K, in which are mountedthe journals of friction-rollers L, which, as will be seen, are incontact with the opposite sides of the wheels D, the journals of saidrollers being at a right angle to the journals of wheels D.

Interposed between the boxes K and the back or inner walls of thebearings J are springs M, which force the rollers L in contact with thesides of the wheels and yield when said rollers are subjected to strain.

It will be seen that, owing to the engagement of the wheels D with thetracks, the truck or car is prevented from displacement or jumping thetracks. Should the wheels be subjected to peripheral pressure due tolateral 6o swaying of the car or curvature of the tracks, the boxesyield and the wheels are thereby relieved, owing to the rollers L.

Should the wheels be subjected to strain when the ear is in motion, itis resisted by the rollers, and thus the wheels are sustained and theirjournals prevented from being wrenohed from their bearing, or boxes, therollers L also being adapted to yield when strain thereon is more thannormal. Furthermore, as the hanger is freely connected with the truck,it also is permitted to yield, it being noticed that springs N andbuffers P are interposed between the hanger and the floor or sills ofthe truck.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A car-truck having the hanger B, with recesses O and E,the wheelsD,having theirjournals in boxes E in said recesses E, and springs H,interposed between the said boxes E and the top walls of said recessesE, substantially as and for the purpose set forth.

2. A car-truck having the hanger B, with oblique wheels mounted thereon,and the springs N and buffers P, interposed between said truck andhanger, substantially as and for the purpose set forth.

3. A hanger having wheels and rollers mounted thereon at a right angleto each other, the wheels being oblique to the car-wheels, and therollers on opposite sides of the wheels, said parts being combined andoperating substantially as and for the purpose set forth.

4. In atruck having a hanger, B, and wheels D, substantially asdescribed, the friction-rollers L, bearings J, journal boxes K, andsprings M, combined and operating substantially as described.

ALBERT O. OEHRLE.

\Vitnesses:

JOHN A. WIEDERsHEIM, JAS. F. KELLY.

